Witchwood Step

Warlock Invocation
Level: Lesser, 3rd
Components: V, S
Casting Time: 1 standard action
Range: Self
Duration: 24 hours
Saving Throw: None
Spell Resistance: No

Your footsteps become supernaturally sure and supportive. Your movement is unaffected by undergrowth or rubble of any kind, and you are immune to being entangled. You can even walk on water, as the water walk spell.
This invocation lasts for 24 hours.

(Complete Mage, Page 124)